The first thing you need to do is establish whatâs causing your wet or damp walls. You can have a pretty good idea of this depending on how damp your walls are and whether itâs a whole wall issue. First, test the dampness of your wall using a damp meter preferably, or failing that, the back of your hand.aulty Flashing, Guttering or Roof Tiles. It may be that your damp walls are being caused by faults in your roof or guttering. You can use a pair of good binoculars to check your guttering, the flashing on your roof and chimney stack and your roof tiles for any breaks or damage.
Best Answer: Common unit: Ohm (Ï) To find the SI unit, first take the definition of resistance, the Ohm's law: 1 Ï = 1 V / 1 A, or shortly, Ï = V/A. Now the ampere is itself a SI unit, volt is not. It's similarly easy and worth memorizing that J = VAs and J = kg*m^2/s^2. (I personally like to use the Joule as a side step.) Compare these two to get V = kg*m^2/(A*s^3). Plug in the Ï above to get Ï = kg * m^2 / (A^2 * s^3). Hope this helps!
We call this time-based opposition, reactance, and like resistance we also measure it in the unit of ohms. As conductance is the complement of resistance, there is also a complementary expression of reactance, called susceptance. Mathematically, it is equal to 1/X, the reciprocal of reactance. Like conductance, it used to be measured in the unit of mhos, but now is measured in Siemens. Its mathematical symbol is âBâ, unfortunately the same symbol used to represent magnetic flux density. The terms âreactanceâ and âsusceptanceâ have a certain linguistic logic to them, just like resistance and conductance.